The problem with booking the payout
Imagine a seller of kitchenware whose payout for a two-week period is AED 31,600. Behind that figure sit gross sales of AED 42,000 including VAT, referral fees of AED 4,800, fulfilment fees of AED 3,100, sponsored product spend of AED 1,900 and refunds of AED 600. If the seller records AED 31,600 as revenue, sales are understated by over 25%, VAT on sales is wrong and the fees, which normally carry VAT the seller may recover, disappear from the books.
Over a year the distortion is large enough to matter for the VAT registration threshold, for corporate tax and for any bank looking at the accounts.